Skip to main content
ARS Home » Northeast Area » Washington, D.C. » National Arboretum » Floral and Nursery Plants Research » Research » Publications at this Location » Publication #394146

Research Project: Detection, Biology, and Genomics of New and Emerging Viral and Bacterial Diseases of Ornamental Plants

Location: Floral and Nursery Plants Research

Title: Plantago asiatica mosaic virus: an emerging plant virus causing necrosis in lilies and a new model RNA virus for molecular research

item KOMATSU, KEN - Tokyo University Of Agriculture & Technology
item Hammond, John

Submitted to: Molecular Plant Pathology
Publication Type: Review Article
Publication Acceptance Date: 6/10/2022
Publication Date: 7/20/2022
Citation: Komatsu, K., Hammond, J. 2022. Plantago asiatica mosaic virus: an emerging plant virus causing necrosis in lilies and a new model RNA virus for molecular research. Molecular Plant Pathology.

Interpretive Summary:

Technical Abstract: Taxonomy: Plantago asiatica mosaic virus belongs to the genus Potexvirus in the family Alphaflexiviridae of the order Tymovirales. Virion and genome properties: Plantago asiatica mosaic virus (PlAMV) has flexuous virions of approximately 490-530 nm in length and 10-15 nm in width. The genome of PlAMV is composed of single-stranded RNA, and encodes five proteins. They are replicase, a set of movement proteins called triple gene block proteins, and a coat protein. Host range: PlAMV has an exceptionally wide host range as the species and has been isolated from various native plants including Plantago asiatica, Nandina domestica, Rehmannia glutinosa, and other weed plants. Experimentally PlAMV can infect many plant species including Nicotiana benthamiana and Arabidopsis thaliana. It also infects ornamental lilies and frequently causes severe necrotic symptoms. However, host range varies depending on isolates, which shows significant biological diversity within the species. Genome diversity: PlAMV can be separated into five clades based on phylogenetic analyses, and genome identities are significantly low between isolates in the different clades. Transmission: PlAMV is not reported to be transmitted by biological vectors. Virions of PlAMV are quite stable and it can be transmitted efficiently by mechanical contact. Disease symptoms: PlAMV causes red-rusted systemic necrosis in ornamental lilies, but it shows much weaker, if any, symptoms in wild plants such as Plantago asiatica. Control: Control of the disease caused by PlAMV is mainly rapid diagnosis and elimination of the infected bulbs or plants.